SC 13D/A

CUSIP No. G3704F 10 2

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 1)

Fuwei Films (Holdings) Co., Ltd.

(Name of Issuer)

Ordinary Shares, par value $0.519008 per share

(Title of Class of Securities)

G3704F 10 2

(CUSIP Number)

Miaomiao Yan

Shanghai Meicheng Enterprise Management Co., Ltd.

No. 1999 Bei Xing Road, San Xing Town

Chongming District, Shanghai, People’s Republic of China

(Shanghai Yu Hai Tang Science Park)

86-13176530559

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

July 18, 2022

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. ¨

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. G3704F 10 2

1	Names of Reporting Persons Miaomiao Yan
2	Check the Appropriate Box if a Member of a Group (a) ¨ (b) x
3	SEC Use Only
4	Source of Funds (See Instructions) AF
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)    ¨
6	Citizenship or Place of Organization People’s Republic of China
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 0
		8	Shared Voting Power 1,728,126 ordinary shares
		9	Sole Dispositive Power 0
		10	Shared Dispositive Power 1,728,126 ordinary shares
11	Aggregate Amount Beneficially Owned by Each Reporting Person 1,728,126 ordinary shares
12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)   ¨
13	Percent of Class Represented by Amount in Row (11) 52.9% (1)
14	Type of Reporting Person (See Instructions) IN

(1) The percentage is calculated based on 3,265,837 ordinary shares of the Issuer outstanding as of April 28, 2022, as reported in the Issuer’s annual report on Form 20-F filed with the Securities and Exchange Commission on April 28, 2022.

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CUSIP No. G3704F 10 2

1	Names of Reporting Persons Shanghai Meicheng Enterprise Management Co., Ltd.
2	Check the Appropriate Box if a Member of a Group (a) ¨ (b) x
3	SEC Use Only
4	Source of Funds (See Instructions) WC
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)     ¨
6	Citizenship or Place of Organization People’s Republic of China
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 0
		8	Shared Voting Power 1,728,126 ordinary shares
		9	Sole Dispositive Power 0
		10	Shared Dispositive Power 1,728,126 ordinary shares
11	Aggregate Amount Beneficially Owned by Each Reporting Person 1,728,126 ordinary shares
12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)   ¨
13	Percent of Class Represented by Amount in Row (11) 52.9% (1)
14	Type of Reporting Person (See Instructions) CO

(1) The percentage is calculated based on 3,265,837 ordinary shares of the Issuer outstanding as of April 28, 2022, as reported in the Issuer’s annual report on Form 20-F filed with the Securities and Exchange Commission on April 28, 2022.

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CUSIP No. G3704F 10 2

1	Names of Reporting Persons Hongkong Ruishang International Trade Co., Ltd.
2	Check the Appropriate Box if a Member of a Group (a) ¨ (b) x
3	SEC Use Only
4	Source of Funds (See Instructions) AF
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)     ¨
6	Citizenship or Place of Organization Hong Kong
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 0
		8	Shared Voting Power 1,728,126 ordinary shares
		9	Sole Dispositive Power 0
		10	Shared Dispositive Power 1,728,126 ordinary shares
11	Aggregate Amount Beneficially Owned by Each Reporting Person 1,728,126 ordinary shares
12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)   ¨
13	Percent of Class Represented by Amount in Row (11) 52.9% (1)
14	Type of Reporting Person (See Instructions) CO

(1) The percentage is calculated based on 3,265,837 ordinary shares of the Issuer outstanding as of April 28, 2022, as reported in the Issuer’s annual report on Form 20-F filed with the Securities and Exchange Commission on April 28, 2022.

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CUSIP No. G3704F 10 2

1	Names of Reporting Persons Apex Glory Holdings Limited
2	Check the Appropriate Box if a Member of a Group (a) ¨ (b) x
3	SEC Use Only
4	Source of Funds (See Instructions) AF
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)     ¨
6	Citizenship or Place of Organization British Virgin Islands
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 0
		8	Shared Voting Power 1,728,126 ordinary shares
		9	Sole Dispositive Power 0
		10	Shared Dispositive Power 1,728,126 ordinary shares
11	Aggregate Amount Beneficially Owned by Each Reporting Person 1,728,126 ordinary shares
12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)   ¨
13	Percent of Class Represented by Amount in Row (11) 52.9% (1)
14	Type of Reporting Person (See Instructions) CO

(1) The percentage is calculated based on 3,265,837 ordinary shares of the Issuer outstanding as of April 28, 2022, as reported in the Issuer’s annual report on Form 20-F filed with the Securities and Exchange Commission on April 28, 2022.

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CUSIP No. G3704F 10 2

EXPLANATORY NOTE

This Amendment No. 1 to Schedule 13D (this “Amendment No. 1”) is being jointly filed by Miaomiao Yan, Shanghai Meicheng Enterprise Management Co., Ltd. (“Meicheng”), Hongkong Ruishang International Trade Co., Ltd. (“Ruishang”) and Apex Glory Holdings Limited (“Apex,” together with Miaomiao Yan, Meicheng and Ruishang, the “Reporting Persons”) as an amendment to that certain Schedule 13D filed by the Reporting Persons with the Securities and Exchange Commission (the “SEC”) on July 6, 2020 (the “Original Schedule 13D,” together with this Amendment No. 1, the “Statement”). Except as amended and supplemented herein, the information set forth in the Original Schedule 13D remains unchanged. Capitalized terms used herein without definition have meanings assigned thereto in the Original Schedule 13D.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Item 6 is supplemented by adding the following:

Lock-up Agreement

Apex entered into a lock-up agreement with Baijiayun Limited (“Baijiayun”) on July 18, 2022, a copy of which is attached hereto as Exhibit 99.3 (the “Lock-up Agreement”), pursuant to which Apex agreed not to, during the period commencing from and including the date thereof and to close of business in New York City one hundred and eighty (180) days after the closing of the merger provided under the agreement and plan of merger, dated as of July 18, 2022 by and between the Issuer and Baijiayun (the “Merger Agreement”): (i) lend, offer, pledge (except as provided in the Lock-up Agreement), hypothecate, encumber, donate, assign, sell, offer to sell, contract or agree to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, or otherwise transfer or dispose of or agree to transfer or dispose of, directly or indirectly, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, any equity securities of the Issuer held by Apex as at the date thereof (all such securities, together with any securities paid as dividends or distributions with respect to such securities or into which such securities are exchanged or converted, the “Restricted Securities”), (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Restricted Securities, or (iii) publicly disclose the intention to do any of the foregoing, whether any such transaction described in clauses (i), (ii) or (iii) above is to be settled by delivery of Restricted Securities or other securities, in cash or otherwise, subject to certain exceptions provided in the Lock-up Agreement. The Lock-up Agreement further provides that in the event that the Merger Agreement is terminated in accordance with its terms, the Lock-up Agreement shall automatically terminate and become null and void.

The foregoing description of the Lock-up Agreement does not purport to be a complete description of the terms thereof and is qualified in its entirety by reference to the full text of the Lock-up Agreement. A copy of the Lock-up Agreement is filed as Exhibit 99.3 hereto and is incorporated herein by reference.

Item 7. Material to be Filed as Exhibits.

Exhibit No.	Description
99.1*	Joint Filing Agreement, dated July 6, 2020, by and among Miaomiao Yan, Meicheng, Ruishang and Apex
99.2*	English translation of Equity Transfer Agreement, dated June 23, 2020, by and between Meicheng and Shandong Sheng Tong Group Co., Ltd.
99.3	Lock-up Agreement, dated July 18, 2022, by and among Apex and Baijiayun Limited.

* Previously filed on July 6, 2020.

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CUSIP No. G3704F 10 2

SIGNATURE

After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: July 18, 2022	Miaomiao Yan
	By:	/s/ Miaomiao Yan
	Shanghai Meicheng Enterprise Management Co., Ltd.
	By:	/s/ Miaomiao Yan
	Name:	Miaomiao Yan
	Title:	Executive Director
	Hongkong Ruishang International Trade Co., Ltd.
	By:	/s/ Lei Yan
	Name:	Lei Yan
	Title:	Director
	Apex Glory Holdings Limited
	By:	/s/ Miaomiao Yan
	Name:	Miaomiao Yan
	Title:	Authorized Signatory

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EX-99.3

Exhibit 99.3

LOCK-UP AGREEMENT

THIS LOCK-UP AGREEMENT (this “Agreement”) is made and entered into as of July 18, 2022, by and among (i) Baijiayun Limited, an exempted company incorporated with limited liability in the Cayman Island (the “Company”), and (ii) the undersigned (“Holder”). Any capitalized term used but not defined in this Agreement will have the meaning ascribed to such term in the Merger Agreement.

WHEREAS, on July 18, 2022, Fuwei Films (Holdings) Co., Ltd., an exempted company incorporated with limited liability in the Cayman Islands (“ListCo”) and the Company entered into that certain Agreement and Plan of Merger (as amended from time to time in accordance with the terms thereof, the “Merger Agreement”);

WHEREAS, as at the date hereof, the Holder is the holder of --1,728,126 ListCo Ordinary Shares; and

WHEREAS, the parties desire to enter into this Agreement, pursuant to which any Equity Securities of ListCo held by the Holder as at the date hereof (all such securities, together with any securities paid as dividends or distributions with respect to such securities or into which such securities are exchanged or converted, the “Restricted Securities”) shall become subject to limitations on disposition as set forth herein.

NOW, THEREFORE, in consideration of the premises set forth above, which are incorporated in this Agreement as if fully set forth below, and intending to be legally bound hereby, the parties hereby agree as follows:

1. Lock-Up Provisions.

(a)                            Holder hereby agrees not to, during the period commencing from and including the date hereof and to close of business in New York City one hundred and eighty (180) days after the Closing (the “Lock-Up Period”): (i) lend, offer, pledge (except as provided herein below), hypothecate, encumber, donate, assign, sell, offer to sell, contract or agree to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, or otherwise transfer or dispose of or agree to transfer or dispose of, directly or indirectly, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), any Restricted Securities, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Restricted Securities, or (iii) publicly disclose the intention to do any of the foregoing, whether any such transaction described in clauses (i), (ii) or (iii) above is to be settled by delivery of Restricted Securities or other securities, in cash or otherwise (any of the foregoing described in clauses (i), (ii) or (iii), a “Prohibited Transfer”).

(b)                           The foregoing Section 1(a) shall not apply to the transfer of any or all of the Restricted Securities owned by Holder (I) by gift, will or intestate succession, virtue of laws of descent and distribution upon the death of Holder, (II) to any Permitted Transferee (defined below), and (III) pursuant to a qualified domestic relations order, divorce settlement, divorce decree or settlement agreement related to the distribution of assets in connection with the dissolution of marriage or civil union; provided, however, that in any of the foregoing cases it shall be a condition to such transfer that the transferee executes and delivers to the Company an agreement stating that the transferee is receiving and holding the Restricted Securities subject to the provisions of this Agreement applicable to Holder, and there shall be no further transfer of such Restricted Securities except in accordance with this Agreement.

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(c)                            As used in this Agreement, the term “Permitted Transferee” shall mean: (A) the members of Holder’s immediate family (for purposes of this Agreement, “immediate family” shall mean with respect to any natural person, any of the following: such person’s spouse, domestic partner, the siblings of such person and his or her spouse, and the direct descendants and ascendants (including adopted and step children and parents) of such person and his or her spouses and siblings), (B) any trust for the direct or indirect benefit of Holder or the immediate family of Holder, (C) if Holder is a trust, to the trustor or beneficiary of such trust or to the estate of a beneficiary of such trust, (D) if Holder is an entity, as a distribution to limited partners, shareholders, members of, or owners of similar equity interests in Holder by virtue of the laws of the jurisdiction of the Holder’s organization and the Holder’s organizational documents upon the liquidation and dissolution of Holder or (E) to any affiliate (as defined in Rule 405 under the Securities Act of 1933, as amended) of Holder. Holder further agrees to execute such agreements as may be reasonably requested by the Company that are consistent with the foregoing or that are necessary to give further effect thereto.

(d)                        If any Prohibited Transfer is made or attempted contrary to the provisions of this Agreement, such purported Prohibited Transfer shall be null and void ab initio, and the Holder shall procure the ListCo to not recognize any such purported transferee of the Restricted Securities as one of its equity holders for any purpose. In order to enforce this Section 1, the Company may and may require ListCo to impose stop-transfer instructions with respect to the Restricted Securities of Holder (and Permitted Transferees and assigns thereof) until the end of the Lock-Up Period.

(e)                        During the Lock-Up Period, the Holder shall procure that each certificate evidencing any Restricted Securities shall be stamped or otherwise imprinted with a legend in substantially the following form, in addition to any other applicable legends:

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON TRANSFER SET FORTH IN A LOCK-UP AGREEMENT, DATED AS OF JULY 18, 2022, AS AMENDED.”

(f)                For the avoidance of any doubt, Holder shall retain all of its rights as a shareholder of ListCo with respect to the Restricted Securities during the Lock-Up Period, including the right to vote any Restricted Securities, but subject to the obligations under the Merger Agreement.

2. Miscellaneous.

(a)                              Termination of Merger Agreement. This Agreement shall be binding upon Holder upon Holder’s execution and delivery of this Agreement. Notwithstanding anything to the contrary contained herein, in the event that the Merger Agreement is terminated in accordance with its terms, this Agreement shall automatically terminate and become null and void, and the parties shall not have any rights or obligations hereunder.

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(b)                         Binding Effect; Assignment. This Agreement and all of the provisions hereof shall be binding upon and inure to the benefit of the parties hereto. This Agreement and all obligations of each party are personal to the respective party, as applicable, and may not be transferred or delegated by any party at any time.

(c)                          Third Parties. Nothing contained in this Agreement or in any instrument or document executed by any party in connection with the transactions contemplated hereby shall create any rights in, or be deemed to have been executed for the benefit of, any person or entity that is not a party hereto or thereto.

(d)                         Governing Law; Jurisdiction. This Agreement and any dispute or controversy arising out of or relating to this Agreement shall be governed by and construed in accordance with the laws of the State of New York, without regard to the conflict of law principles thereof. Any dispute, controversy, difference, or claim arising out of or relating to this Agreement, including its existence, validity, interpretation, performance, breach, or termination, or any dispute regarding non-contractual obligations arising out of or relating to this Agreement, shall be referred to and finally resolved by arbitration administered by the Hong Kong International Arbitration Centre (“HKIAC”) under the HKIAC Administered Arbitration Rules in force when the Notice of Arbitration is submitted. The seat of arbitration shall be Hong Kong. There shall be three arbitrators. The arbitration proceedings shall be conducted in English. The law of this arbitration clause shall be Hong Kong law. For the avoidance of doubt, a request by a party to a court of competent jurisdiction for interim measures necessary to preserve such party’s rights, including pre-arbitration attachments, injunctions, or other equitable relief, shall not be deemed incompatible with, or a waiver of, the agreement to arbitrate in this Section 2(d).

(e)                          WAIVER OF JURY TRIAL. EACH OF THE PARTIES HERETO HEREBY WAIVES TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY WITH RESPECT TO ANY ACTION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. EACH PARTY HERETO (i) CERTIFIES THAT NO REPRESENTATIVE OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF ANY ACTION, SEEK TO ENFORCE THAT FOREGOING WAIVER AND (ii) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 2(e).

(f)                           Interpretation. The titles and subtitles used in this Agreement are for convenience only and are not to be considered in construing or interpreting this Agreement. In this Agreement, unless the context otherwise requires: (i) any pronoun used in this Agreement shall include the corresponding masculine, feminine or neuter forms, and the singular form of nouns, pronouns and verbs shall include the plural and vice versa; (ii) “including” (and with correlative meaning “include”) means including without limiting the generality of any description preceding or succeeding such term and shall be deemed in each case to be followed by the words “without limitation”; (iii) the words “herein,” “hereto,” and “hereby” and other words of similar import in this Agreement shall be deemed in each case to refer to this Agreement as a whole and not to any particular section or other subdivision of this Agreement; and (iv) the term “or” means “and/or”. The parties have participated jointly in the negotiation and drafting of this Agreement. Consequently, in the event an ambiguity or question of intent or interpretation arises, this Agreement shall be construed as if drafted jointly by the parties hereto, and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of the authorship of any provision of this Agreement.

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(g)                         Notices. All notices, consents, waivers and other communications hereunder shall be in writing and shall be deemed to have been duly given when delivered (i) in person, (ii) by facsimile or other electronic means, with affirmative confirmation of receipt, (iii) one Business Day after being sent, if sent by reputable, nationally recognized overnight courier service or (iv) three (3) Business Days after being mailed, if sent by registered or certified mail, pre-paid and return receipt requested, in each case to the applicable party at the following addresses (or at such other address for a party as shall be specified by like notice):

If to the Company, to: Baijiayun Limited 2C, Block 2, Zhongguancun Software Park, Haidian District, Beijing, the PRC Attention: Jiayue He Email: hejiayue@baijiayun.com	With a copy to (which will not constitute notice): Linklaters LLP 11th Floor, Alexandra House Chater Road Hong Kong, China Attention: xiaoxi.lin@linklaters.com
If to Holder, to: the address set forth below Holder’s name on the signature page to this Agreement

(h)                         Amendments and Waivers. Any term of this Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance, and either retroactively or prospectively) only with the written consent of ListCo, the Company and Holder. No failure or delay by a party in exercising any right hereunder shall operate as a waiver thereof. No waivers of or exceptions to any term, condition, or provision of this Agreement, in any one or more instances, shall be deemed to be or construed as a further or continuing waiver of any such term, condition, or provision.

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(i)                           Severability. In case any provision in this Agreement shall be held invalid, illegal or unenforceable in a jurisdiction, such provision shall be modified or deleted, as to the jurisdiction involved, only to the extent necessary to render the same valid, legal and enforceable, and the validity, legality and enforceability of the remaining provisions hereof shall not in any way be affected or impaired thereby nor shall the validity, legality or enforceability of such provision be affected thereby in any other jurisdiction. Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the parties will substitute for any invalid, illegal or unenforceable provision a suitable and equitable provision that carries out, so far as may be valid, legal and enforceable, the intent and purpose of such invalid, illegal or unenforceable provision.

(j)                           Specific Performance. Holder acknowledges that its obligations under this Agreement are unique, recognizes and affirms that in the event of a breach of this Agreement by Holder, money damages will be inadequate and ListCo will have no adequate remedy at law, and agrees that irreparable damage would occur in the event that any of the provisions of this Agreement were not performed by Holder in accordance with their specific terms or were otherwise breached. Accordingly, each of ListCo and the Company shall be entitled to an injunction or restraining order to prevent breaches of this Agreement by Holder and to enforce specifically the terms and provisions hereof, without the requirement to post any bond or other security or to prove that money damages would be inadequate, this being in addition to any other right or remedy to which such party may be entitled under this Agreement, at law or in equity.

(k)                         Entire Agreement. This Agreement constitutes the full and entire understanding and agreement among the parties with respect to the subject matter hereof, and any other written or oral agreement relating to the subject matter hereof existing between the parties is expressly canceled; provided, that, for the avoidance of doubt, the foregoing shall not affect the rights and obligations of the parties under the Merger Agreement or any other Transaction Agreements. Notwithstanding the foregoing, nothing in this Agreement shall limit any of the rights or remedies of ListCo and the Company or any of the obligations of Holder under any other agreement between Holder and ListCo or the Company or any certificate or instrument executed by Holder in favor of ListCo or the Company, and nothing in any other agreement, certificate or instrument shall limit any of the rights or remedies of ListCo and the Company or any of the obligations of Holder under this Agreement.

(l)                            Further Assurances. From time to time, at another party’s request and without further consideration (but at the requesting party’s reasonable cost and expense), each party shall execute and deliver such additional documents and take all such further action as may be reasonably necessary to consummate the transactions contemplated by this Agreement.

(m)                       Counterparts; Facsimile. This Agreement may also be executed and delivered by facsimile signature or by email in portable document format in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

{Remainder of Page Intentionally Left Blank; Signature Pages Follow}

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IN WITNESS WHEREOF, the parties have executed this Lock-Up Agreement as of the date first written above.

Company:

Baijiayun Limited

/s/ Gangjiang Li

Name: Gangjiang Li

Title: Director

{Additional Signature on the Following Page}

IN WITNESS WHEREOF, the parties have executed this Lock-Up Agreement as of the date first written above.

	Holder:
	Apex Glory Holdings Limited
	/s/ Miaomiao Yan
	Name: Miaomiao Yan
	Title: Authorized Signatory
Address for Notice:
Address:
2255 Tongyin Street, Kuiwen District,
Weifang, Shandong Province, the PRC
中国山东省潍坊市奎文区桐荫街2255号
Email:
shanghaimc2020@163.com